Sea Breeze and Land Breeze<br />Specific Heat and Heat Transfer Revisited<br />
What do we remember about Specific Heat?<br />Substances with a high specific heat warm and cool slowly. <br />They take more energy to change temperature<br /><ul><li>Substances with a low specific heat warm and cool quickly.
Sand (Land) has a low specific heat</li></li></ul><li>What do we remember about heat transfer?<br />Heat is transferred in three ways:<br />Convection- warm air rises over cold air (Density)<br />Conduction- Heat is transferred through direct contact<br />Radiation- Heat is transferred in invisible waves. Ex: the suns energy reaches Earth as radiation<br />All 3 types of heat transfer affect the climate and weather on Earth. <br />
Putting it all Together…<br />Heat from the Sun is transferred to the Earth through Radiation. <br />
During the day…Sea BreezeHow does a breeze in the middle of a hot day feel?<br />The SAME amount of heat energy hits the land and the water on Earth, but water has a higher Specific Heat than land. <br />The Land gets Hot much Faster than the water. <br />The Air that touches the land gets warm through conduction. <br />The Air over the ocean stays cooler. <br />Because Warm air is less dense than cold air, convection occurs.<br />The warm air will rise up allowing the cool air over the ocean to come in to the land<br />This feels like a cool breeze from the ocean called a Sea Breeze. (It’s named by where it comes from) <br />
During the night…Land Breeze<br />We learned from Specific Heat that water warms slowly, AND cools slowly.<br />At night when the sun goes down, the land cools very quickly because it has a low specific heat. <br />The ocean stays warm because it has a high specific heat and holds onto the heat longer. <br />The convection Current in the air is now reversed. <br />The warm air over the water rises, and the cold air over the land moves in over the ocean to replace the warm air. <br />A cool breeze would pass over the ocean called a LAND BREEZE.(Again, named by where it comes from)<br />
Now You Try…<br />Please complete the ticket out. <br />You have until the end of class to complete.<br />Use complete sentences and proper grammar. <br />Include the following words in your answers: Conduction, Convection, Radiation, Specific Heat (High and Low) <br />